Pittsburgh Steelers running back Le'Veon Bell (26) runs in drills in drills at practice during NFL football training camp at the team training facility in Latrobe, Pa. on Monday, July 29, 2013 . (AP Photo/Keith Srakocic)

Isaac Redman, who was listed as a co-starter along with Bell on the team's latest depth chart, also left Thursday's practice with a stinger.

“(Le’Veon) will be evaluated shortly and we will have more information regarding his status once we get that evaluation,” Tomlin told Steelers.com. “Isaac with the stinger, as soon as he regains strength will be back in participation.”

Bell has been a standout performer at Steelers camp with his patient and physical running style. He was elevated to co-starter earlier this week and could be a strong preseason effort away from separating himself from Redman.

That performance might not come until Pittsburgh's third preseason game vs. the Kansas City Chiefs.